Facebook Feed Not Rendering

Set to display on the homepage (scroll down on the left) using the shortcode.

The loading icon displays but the feed never loads.

Used to work but suddenly just stopped for some reason.

Have double checked we have got the correct access token in the admin area

Within the app settings the Facebook profile is business verified and satus is set to “In Development” rather than “Live”.

Does the app need to be submitted for App Review? This was never a problem before?

The page I need help with: [log in to see the link]